Sawing-machine.



No. 739,044. PATENTED SEPT. 15, 1903. T. S, WILKIN 6; E. S. NEWTON.

S'AWING MACHINE; APPLIOATION FILED 31:1 15. 1902.

8 SHEETS-SHEET 1'.-

HO MODEL.

m: mums zrzas co PNOTOLITHOI, wnsmnc'ron n. c,

N0.7s9,o44. PATENTED SEPT. 15, 1903.

T. s. WILKIN & E. s. NEWTON.

SA-WING MACHINE.

APPLICATION FILE-D SEPT. 15, 1902.

3 SHEETS-SHEET 2.

N0 MODEL.

No. 739,044. PATBNTBD SEPT/15, 1903. T. S WILKIN & E. S. NEWTON;

' SAWING MACHINE, APPLICATION FILED SEPT. 15, 1902.

no MODEL.

8 SHEETS-SHEET 3.

UNITE STATES Patented September 15, 1963.

PATENT OFFICE.

THEODORE S. WILKIN, OF MILWAUKEE, AND EDWARD S. NEWTON, OF

FOND DU LAO, WISCONSIN.

'SAWlNG-MACHINE.

SPECIFICATION forming part of Letters Patent No. 739,044, dated September 15, 1903. Application filed September 15,1902. Serial ire. 123.406. (No model.)

To all whom it may concern:

Be it known that we, THEODORE S. WIL- KIN, residing at Milwaukee, county of Milwaukee, and EDWARD S. NEWTON, residing at Fond du Lac, county of Fond .du Lac, State of Wisconsin, have invented a new and useful Improvement in Sawing Machines, of which the following is a description, reference being had to the accompanying drawings, which are a part of this specification.

Our invention relates to improvements in band-saw machines of that class specifically known as resaw-machines, which improvements are adapted to facilitate and secure the sawing of lumber of large or small size true and straight from end to end, either parallel with or at an inclination to a straight flat surface of the lumber already existing.

Other improvements in the construction relate to details thereof incidental to the chief feature of the invention. It should, however, be stated in this connection that in resaw-machines-that is, in machines for resawing lumber that has already been sawed into plank or some thick form and is to be resawed by sawing it in two from end to endthe saw is usually a thin endless band-saw, running on two wheels and so mounted that the upper line of the saw between the wheels travels horizontally j ust above the plane of a table, and the material, a plank or similar form of material, is fed onthe table to the saw. It is difficult to so file or file and set the saw that it will out true through the material from end to end. I

Our invention also provides means for correcting the tendency of such saw to run or vary from a true cut, thus obviating the resawing the material with an inclined, beveled, or untrue surface, either in part or entirely through the plank or material.

In the drawings, Figure 1 is an elevation in outline of a resaw-machine embodying our invention. Fig. 2 is a view of an adjustable table involved in the invention, parts being in section. This table is shown also in smaller size in position in the machine in Fig. 1. Fig. 3 is'a longitudinal section vertically of the feed-table of the machine, showing means for adjusting the table vertically. Fig. 4 is an elevation of our improved mathe standards 2.

chine, showing means for tilting the saw, the table being in section; and Fig. 5 is a side view of the construction shown in Fig. 4, parts being broken away for convenience of illustration.

In the drawings, A is a base of suitable size and form for supporting the operative and adjustable parts of the machine. Two standards 2 2 are secured in upright position on the base A, and a table-supporting frame 3 is mounted adjustable verticallyon each of For raising and lowering each of these tables a shaft 4 is mounted revolubly in the standards 2 2 and is provided with pinion-segments 5, that mesh with racks 6 on bars 7, that are slidable vertically in Ways therefor on the frames 3, the frames 3 being supported directly on nuts 8, turning by screw-thread on the screw-threaded lower extremities of the bars 7. For rotating the shaft 4, whereby to lift or lower the bars 7 and therewith the frames 3, supported on the bars, a segmental rack 9 is fixed on the'shaft of the frames 3 3 conveniently by being hinged thereto at one side, as shown at 15, and at the other side being supported advisably by screw-bolts 16, whereby the table can be adjusted or lined up laterally on the frames 3. The table 14: is advisably provided with up wardly-extending guards 17 17 at one "side I thereof in front and at the rear of the transversely-running band-saw 18, the upper line of which saw runs transversely of the table at a little distance above it. If desired, feedrolls 19 19 may be provided, and when employed these rolls are mounted on the table 14: and so that their upper surface will FbB flush with or slightly above the surface of the table 14.. It is also desirable to provide ICO one or more presser-rolls 20, adapted to bear yieldingly on the upper surface of the material being fed to the saw on the table 14, and such presser roll or rolls may be mounted in a frame 21, secured to and supported on the table 14.

Means have hereinbefore been described for adjusting the table 14 bodily vertically; but as it is sometimes desirable to raise or lower one end of the table with reference to the saw or to uptilt it endwise slightly we provide means therefor as follows: The nuts 8, turning by their threads on the screw-threaded lower ends of the bar 7, are provided with worm-teeth peripherally, the teeth on these nuts being reversely threadedthat is, the teeth on one nut being right-hand teeth and the teeth on the other nut being left-hand teeth-and a crank-rod 22, mounted in lugs therefor on the frames 3, are provided with worms 23 23, which gear with the worm-teeth on the nuts 8 8 and with a crank-handle 24. The crank-rod 23 is advisably made in parts connected together by separable knucklejoints 25 25, whereby the crank-rod is made flexible and also separable. It will be understood that by rotating this rod 22 the position of the table 14 will be changed endwise by the raising of one end of the table and lowering the other end at the same time. Such movement will be a limited one, as no great movement of the table in this respect will ever be required. By separating one of the knuckle-joints 25 the portion of the crankrod 22 provided with the crank 24 can be rotated independently of the other portion of the rod, and thereby that end of the table 14 can be raised or lowered slightly independently of the other end.

For carrying the band-saw 18 two wheels 26 26 are mounted in the extremities of a wheelframe 27, the boxes in which thewheel 26 has its bearings at one end of the frame being adjustable in the frame toward and from the other wheel for securing a proper tension of the saw. In the construction shown in Fig. 1 this wheel-frame 27 is mounted rigidly on the base A; but as it is sometimes desirable to slightly tilt the band-saw 18 to cause it to run true through lumber We preferably mount the wheel-frame 27 tiltably on the base A. in the manner illustrated in Figs. 4 and 5. For this purpose the frame 27 is provided with segmental bearing-blocks 29, mounted in correspondiugly-curved ways 30 in the base A, the construction being such as to permit of the tilting or oscillation of the wheel-frame about its longitudinal axis that cuts at right angles the axes of the wheels 26 26. For thus tilting the frame 27, and

thereby adjusting the saw, the frame is provided with a laterally projecting arm 31, which is provided with a screw-threaded nut 32, pivoted conveniently by trunnions in ears 33 on the arm 31, and a rod 34, turning byits thread in the nut 32, is footed revolubly in the base A, so that by turning this rod either to the right or left the arm 31 is raised or lowered, and the saw 18 is thereby correspondingly tilted. For rotating the rod 34 we advisably provide a revoluble hand-rod 35, mounted in the base A, which rod is provided with a pinion meshing with a toothed wheel 36 on the rod 34 and with a handwheel 37 for conveniently rotating it.-

For securing the frame 27 in position tiltably on the base A we employ, preferably, curved flanges 38 38, projecting laterally slightly from the bearing-blocks 29 at and along their curved edges, and guides 39 39, fixed on the base, that turn over and loosely clasp the flanges 38 38.

What we claim as our invention is- 1. In a sawing-machine, the combination with a saw running horizontally, of a feedtable extending past the saw toward the front and toward the rear, and means for adjusting one end of the table vertically whereby the longitudinal plane of the table can be changed limitedly to oblique position with reference to the medially-disposed and transverselyrunning saw.

2. In a sawing-machine, the combination with a saw running horizontally, of a single feed-table at the front and at the rear of the saw, and means for adjusting the respective ends of the table concurrently one end up and the other end down limitedly, whereby the longitudinal plane of the table will be changed reversely in front and at the rear of the saw the transverse line of the table at the crossing of the saw remaining stationary relative to the horizontal plane of the saw.

3. In a sawing-machine, the combination with a band-saw a line of which runs horizontally, of a base, frames mounted movable vertically on the base, a feed-table supported on the frames, means for adjusting the frames and the table thereon bodily up or down, and other means for adjusting one of the frames and the corresponding end of the table'up or down.

4:. In a sawingmachine, the combination with a band-saw a line of which runs horizontally, of a base, frames mounted movable vertically on the base, a feed-table supper-ted on the frames, means for adjusting the frames and the tables thereon bodily up or down, and other means adapted for raising one frame and that end of the table and concurrently lowering the other frame and its end of the table.

5. In a sawing-machine, the combination with a saw running horizontally, of a base, frames mounted adj ustably vertically on the base, a feed-table hinged at one side edge to the frames and vertically-adjustable means between the frames and the table at the other 6. In a sawing-machine, a base, a horizontallydisposed feed table, an endless bandsaw one line of which runs near to and trans IIO a horizontally-disposed feed-table supported.

on the base, an endless band-saw one line of which runs near to and transversely of the feed-table, wheels one at each side of the table on which the band-saw is carried, a bandsaw frame disposed transversely of the feedtable and in the ends of which said band-saw wheels are mounted, and curved ways on the.

base in which complementary curved blocks on the band-saw frame are mounted whereby the frame is tiltable about its longitudinal axis intersecting the axesof said band-saw wheels.

8. In a sawing-machine, a base, ahorizontally-disposed feed-table, an endless bandsaW one line of which runs near to and transversely of the feed-table, a frame carrying wheels on which the band-saw is mounted and runs, means by which the band-saw frame is mounted on the base tiltably about its axis intersecting the axes of the wheels at right angles, a laterally-extending arm on said frame, a nut pivoted on the arm, and a rod rotatable in the base and turning by its thread in said nutadapted by its rotation to tilt saidv frame.

9. In a sawing-machine, a base provided with standards, a frame mounted movably vertically on each standard, a rack-bar slidable vertically on the frame, a nut turning on the bar and supporting the frame, a shaft rotatable on the standards and provided with pinion-segments meshing with the racks on the bars, and means for rotating the shaft.

l0. In a sawing-machine, a base provided with standards, frames mounted movably vertically onthe standards, rack-bars slidable Vertically on the frames, nuts turning on the bars and supporting the frames, a shaft rotatable on the standards and provided with pinion-segments meshing with the racks on the bars, means for rotating the shaft, and other means for rotating said nuts.

11. In a sawing-machine, a base provided with standards, a horizontally-disposed feed 7 table, means mounted on the standards supporting the table adjustable vertically, a band-saw running above and transversely of the feed-table, band-saw wheels, a band-saw frame mounted on the base transversely of the table and so as to be tiltable about an axis intersecting the axes of the band-saw wheels in said frame, and means for securing the tilted frame in position.

In testimony whereof we affix our signatures in presence of two witnesses.

THEODORE s. WILKIN. EDWARD s. NEWTON, 

